William duioett



UNITED STATES PATENT OFFICE. ;-,fgj

FLUSHING SPEGIFICATION forming part f Leiters Patent No. 331,224,y dated April 17, 188,8. Appnemipnnied May 4, iss?. serai No. 23ans. (No modem lTo all whom tL may concern/.-

Be it known that I, WILLIAM DUNNETT, a citizen of the United States, residing at Baltimore', in the State of Maryland, have invented certain new and useful Improvements in Flushin'g-Gisterns; andI dodeclare the following to be a full, clear,-and exact description. of the invention, such aswill enable others skilledin the art to which it appertains to lmake'and use lo the` same, reference being had-to the accom panying drawings,`and to the letters and g` k2o ated at such times as may be desired, provis-l ion being made for readily changing from one operation to the other, the automatic device being so constructed that it may be set to Iflush at any desired intervals, and, it may be employed eithervin combination with the hand device orv be used independently, the object of my invention being to'provide a system of finishing for water-closets, whereby the advantage of flushing when desired may be employed, or in caselthe premises should be vacated the automatic device may be instantly l y put in operationand the danger of the traps being emptied from vaporization of the water therein avoided. In the further description of my invention reference is had to the accompanying draW- ings, in Which- Figure l is a front elevation ofthe devicel l complete, partly in section. Fig. 2 is a plan of 4o the cistern shown in Fig. 1.

The same figuresv refer to the same or similar parts throughout the several views.

The figure 6 denotes the cistern-box, which receives its water through the supply-pipe 7,

this pipe branching at 8, one pipe, 9, beingprovided with the cock 9%' and terminating in the float-valve 10, which gives the supply of water for flushing by hand, thisvalve being operated in the manner usual in this method. When 5o the float 11 is down,the valve 10 is open and the Water passes therethrough and out the nozzle '12. As thewaterinfth'e cistern Griseathedoatf, 11 risest in unison` therewith, and at axed point in-its elevation `closes the valve I10, when the height lof the water in the'cistern .will re- WILLIAM DUNN'ETT, oEEAL'rIMoRE, MARYLAND, Assre'NoE' or ONEHALE rro J. EEeEsTEE a soNs,poE SAME PLACE. t

T mainstationary until the flushing-valve 13 is' .f

opened by means of the cord/14 and-'the'` l weighted lever 15, 'when the flushingapipe 16 l. y* will be charged, avaeuum formed in the' S- phon 17, and thewater in thecistern will be drawn outilushingthe hopper 19, andlowered until it passesl below theopenend 18 ofthe siv phon417, when the vacuum thereinwvillv be l broken andthe operationfof refilling x the cistern ,with water willbe repeatedbythefoat 11 .and float valve 10, as heretofore described. Thebranch 20, with its shutoff cock 20%-,i'sjpro-V vided'for supplying the water in the automatic K system and is furnishedwith the small petcock 22,V which constantly admits any desired quan- 1 tity of water, and the .iioat-valve 21.,- which l l 1 I operatesjin a manner the opposite ofthe valve 10,\heretofore describedth at is, when the YWater inthe cistern' hasreached acertain height.

the valve 2l will open and admit a large volume of water into the cistern 6, whereby'the'v` water will be carried suddenly over thebend 23 in the Siphon 17 the said siphon charged,`

and the water in the. tank willbe lowered, f

flushing the hopper untilit passesl the open end 18 of the siph'on, when an interval of flush-j ing VvWill elapse until sufficient Iwater has `run v,from the petcock'22 to again put in automatic operation the oat-'valve 21,`w`hen theoperai tion described will be repeated. The flushingvalve'lf/ is herewith attached thatthe hopper 19r may be flushed at any time, without ,waiting for` the proper interval, when the operaj tion will'be performed by the automatic de,-

into the two branches9 and 20, each branch being fitted with a cock for supplying either The manner of operating is as follows; .The y `cistern 6 is provided .with jbothsystems of flushing, the water-supplypipe7 being divided ofeoperating is that commonly employed, in, y

the manner following, wherein the water is supplied to the cistern 6 through the supply-pipe 9. When the water in said cistern is down, the lower position of the float 11 opens the valve 10 and admits the water to the cistern 6, which when it has reached a certain height by the rising of the float 11 closes the valve 10, and the supply is shut oi, the waterin the cistern 6 remaining at this height until the ilushingvalve 13 is open, inthe manner heretofore described, when the siphon 17 will be charged and the water drawn from the cistern thereby and the hopper 19 flushed, the lowering of the water in the cistern 6 causing the oat-valve 10 to be opened and the cistern again charged. When it is desired to operate the automatic system, the cock 9% is closed and the cock 20 opened, whereby the supply will be admitted to the cistern 6 through the petcoek,22, which may be set to admit that quantity of water which is to control the intervals of flushing, whereby the float-valve 21 will be opened when the water has reached a certain height, the Siphon 17 automatically charged and the hopper 19 flushed.

The combination of the two systems in the one cistern possesses the advantage of rendering the device automatic, and being set to flush at any interval oftime, and thus insure a cleansing and proper sealing of the traps when the premises shall be vacant.

Having described my invention and the manner of operating, what I claim, and desire to secure by United States Letters Patent, is-

In a flushing-'cistern for water closets, the

combination of a system for flushing by hand,

consisting of a float-valve toautomatically admit or shut off the waterto the said cistern by the rise or fall of water therein, and a flushing-valve operated by hand, and a system for automatically flushing, consisting of a floatvalve which is automatically opened for flushing by the rise of water in the said cistern, and a water-supply pipe, 20, provided with a cock or valve for admitting water to the said cistern and to regulate the intervals of flushing, and the cut-off cocks 9% and 20%, whereby the systems may be changed from one to the other, for the purpose set forth.

In testimony whereof I aiiix my signaturein presence of two witnesses.

WILLIAM DUNNETT.

Witnesses:

' WM. L. BAILIE,

JNO. T. MADDoX. 

